Xavier Dubuisson, XD Consulting http://xdconsulting.eu/[delivered Paul Kenny’s presentation]Xavier is a consulting engineer with over 16 years experience in the field of renewable energyand energy efficiency. He came to West Cork from Belgium to work at SEAI's RenewableEnergy Information Office where he was instrumental in the radical transformation of the marketand policy-framework for renewables in Ireland. He has been working as a consultant since2007 and created XD Consulting in 2011, offering integrated, multidisciplinary services in thefield of sustainable energy for the private and public sector. He has pioneered local energyplanning in Ireland and continues supporting communities making the transition to a low-carbon,resilient future.

2015 Superhomes Project• Project need• Key components• What’s different

TEA & Domestic Retrofit• House of Tomorrow 2006

– 80 Social houses– Shallow works

• 2008-2012– SERVE (EU Concerto)– Incorporating National Retrofit Pilot– 347 houses; 45% theory; 37% actual savings

• Social Housing 2013– TEA secured 2.5M for social housing retrofit– 502 social houses across all towns.– 75% fuel allowance

• Private Housing 2014– 150 private houses – 85% Fuel allowance– 800 applications

• Private Housing 2015– 2015 Warmer homes 140 houses– 2015 Super homes Near Zero

advanced retrofit

Domestic Retrofit• EU FP6 Concerto “Sustainable energy demonstration

project.– Targeting 347 existing, 80 new homes in Tipperary, 20 business – Concentrating on Retrofitting best value for money– 45% Theoretical reduction in heating. 37% actual– Technical & policy reports for government– Socioeconomic research– €4M EU grant – €10M total Project – 200 job years!– 600 sensors monitoring– Many lessons

Climate Change Reality• “The latest science makes it clear that the world needs to reach zero

carbon emissions globally by 2050 to maximise chances of staying below 2 degrees and to make 1.5 degrees feasible,”… Mary Robinson, NUI maynooth, Summer 2015

• End fossil fuels for heating and electricity by 2040• Grid Electricity is a huge challenge (but not for Today’s discussion!!)• For housing:

– Elimination of fossil fuel at household level.– Energy Efficiency– Renewable energy primary and secondary heat.

• Practical implications:– Airtightness & ventilation– Fabric– Wood Pellets or Heat pumps and Grid De-Carbonisation.

Domestic CO2 reduction options• Credible option A:• At generational retrofit (30-50 years) – when large works being

undertaken:– External insulation to foundation, and through soffit.– Remove ceilings, membrane installation, and replace floor.– New windows & doors, airtight to fabric.– Airtightness to 0.6-2 ACH; – HRV, External airsource stoves, heatpumps with underfloor heating.– 60-80k additional cost Vs standard deep renovation (re-wire/ plastering/ plumbing)– BER of 40-65 kWh/M2/annum. – €300-€500 to heat.– 1.8M houses @70k = 126Bn Euro.– It will take 50-100 years at current renovation rate to achieve.

• We have 25.• We need a cheaper solution.

Domestic CO2 reduction options• Credible option B:• At deep retrofit that forgoes very long payback fabric upgrades that costs

less to do, but higher ongoing heat use using RES-E (via grid)– External insulation only for solid walls. – Seal up gaps and holes with 3-6 man days labour to achieve 3-5ACH/ Hr.– New front doors.– New windows where > 3Uvalue; new glazing where frames have long life left.– Heat recovery ventialtion or Demand controlled extract ventilation (i.e. not hole in

wall!!)– Heatpumps with LT rads (COP 3 expected) or pellets.– 20-40k cost.– BER of 70-100 kWh/M2/annum. – €600- €800 to heat vs €1800 (18MWh @10c oil; after boiler).– 1.8M houses @25k = 45 Bn Euro. (still 8-10 x current retrofit rate!!).

Measures• Minimum Requirements:• Heat pumps:

– Need Low Temperature Radiators– Need longer heating times, therefore airtightness becomes more of an issue.– If airtightness improved, ventilation needs to be improved.– Controls need to be integrated (on/ off Vs radiator temperature control).

• Biomass Boilers– Pellets may be chosen (larger, historic dwellings) – Log gassification stoves or Boilers may be chosen with self supply, but not likely.

• Secondary heating– Remove open fires or Install Chain based chimney closure and No HRV.– Biomass room heater stoves with external air feed.

• Airtightness upgrade (experimental)– Pre works test.– Window/ door frame seal upgrade.– Service openings external and internal sealing.– Attic AT works (Taping services, Wires from ceiling roses/ conduits, other openings).– Other AT weaknesses based on a test.

Measures• Minimum Requirements:• Ventilation:

– Ideally Whole House Heat recovery Ventilation however:• Can be excessively disruptive/ costly• Householder may be tied to Open fires or non balanced flue stoves (HRV not ok).

– Demand Control Ventilation– Other TBC.

• Real time electricity monitor.• External access controls• Hot water tank for Heat pump (i.e. Low temperature coil)• Passiv Haus Front Door.

MeasuresOptional additions:• Cavity wall insulation - mandatory if required• External Wall insulation - mandatory if U value > 0.5• Attic insulation. - mandatory if required• Windows (frames and glazing) - mandatory if >2.7 U Value• Glazing Elements (coated, warm edge spacer, inert gas)• Solar PV (optional)

– All houses will have day / night meter upgrades for the HP.– High day baseload with HRV.– Solar Water heater via PV and heatpump!– Need Low Temperature Radiators

• Low energy Lighting.– High Quality LED’s

Barriers to Deep Retrofit“I don’t know what to do, How do I know what is value for money? What product is good, and what is not?”

“Who will do the work, and how can I trust them?”

“I can’t afford the capital cost, but I have high bills!”

“I want cheap finance, but am reluctant to remortgage”

“It’s too much hassle, if only someone would just do it for me!”

“who will make sure it is done correctly”

“if I sell the house, all the money will be wasted”

Superhomes ProjectTEA select & support home-owner: • Homeowner expression of interest (Webform)• Screening phonecall & survey• Mini-competition on framework• Detailed report, quote (detailed savings for bank)

Report draws on significant academic research:- Energy price trends for last 30 years.- Do nothing cost (with historical inflation) - Investment + cost Vs do nothing cost.- Non energy benefits of energy efficiency (IEA)- Argues that a financed retrofit is cheaper than no retrofit.- Argues that equity (home value) is better than investment (mostly)

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Superhomes ProjectBank finances work• Home owner applies to Bank for Loan.• Homeowner signs contract with contractor. • TEA manage, support and certify works• National support of 30% for deep retrofit.• Grant drawdown to contractor to limit loan size• Energy credit certification (SEAI) , pays loan interest.• Homeowner commences loan repayments from a warm home.

Essentially – homeowner calls trusted intermediary, makes a few decisions with advice, puts up with disruption & learning new controls, commences repayments.

Project Partners- National energy agency: Sustainable Energy Authority of Ireland.- State’s largest domestic bank (AIB)- States largest obligated energy supplier (Electric Ireland)- States distribution grid operator (ESB networks)- States premier academic energy research group (UCD ERC).- The market: All major Heat pump manufacturers, selection of

contractors.- 20 early adopters.

• Non profit, public good social enterprise

• Partnership approach• Energy management• Renewable energy and energy

efficiency• Procurement, project mgmt.• Cost effective, value driven

• Paul Kenny• Chief Executive• T: 052 7443090• F: 052 7443012• E: pkenny@tea.ie• W: www.tea.ie

Tipperary Energy Agency